It tells the story of Philippe Petit, the wire walker and street performer who, in 1974, walked across the sky on a cable he and his friends secretly strung between the rooftops of the Twin Towers. Narrated like an animated children's book by an off-screen voice, the film traces Philippe's passion and imagination, details the intricate process of installing the wire, and concludes with his subsequent arrest and the unique punishment he received. The film celebrates his daring act as a thing of beauty, forever woven into our collective memory of the Twin Towers.